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The Littelfuse MA1-B-32-440-1-A27-B-E is a single-pole magnetic circuit breaker with hydraulic delay, designed for overcurrent protection. It is rated for 4 amps continuous current at 250 volts AC or DC. The magnetic hydraulic delay mechanism provides time-delayed tripping to accommodate inrush currents while ensuring reliable protection against sustained overloads and short circuits.
The breaker features a rocker actuator for manual on/off control and reset, and is non-illuminated. It is designed for panel mount installation, making it suitable for equipment panels and control enclosures. The compact 1-pole design allows for space-efficient mounting.
This circuit breaker holds safety approvals from multiple international agencies including CCC, CSA, TUV, and UL. It is also marked as RoHS compliant and REACH unaffected, supporting environmental requirements.
Applications include power distribution, industrial controls, medical equipment, and other systems requiring reliable circuit protection in a compact form factor. The magnetic hydraulic delay characteristic is ideal for loads with high inrush currents such as motors and transformers.
The voltage rating is 250V.
The current rating is 4A.
It is a magnetic (hydraulic delay) circuit breaker.
It has 1 pole.
It uses a rocker actuator.
It is designed for panel mount installation.
It is approved by CCC, CSA, TUV, and UL.